By Mary Milliken

LOS ANGELES, March 12 (Reuters) - Jamie Lee Curtis won the Oscar for the best supporting actress on Sunday for her role as the imperious IRS auditor bearing down on a Chinese American laundromat owner struggling to finish her taxes in "Everything Everywhere All At Once."

It was the first Academy Award for the 64-year-old Curtis, in her first ever Oscar nomination over a 45-year career in film that kicked off with the horror movie "Halloween." She prevailed over other front-runners Angela Bassett and Kerry Condon.

Two weeks earlier, Curtis had won the same award from the Screen Actors Guild and said in her acceptance speech that when she got the call for a "weird" movie and heard she would be working with lead actress Michelle Yeoh, she was all in.

As the frumpy Internal Revenue Service auditor Deirdre Beaubeirdre, Curtis lays into Yeoh's character Evelyn in the tax office before the movie erupts into a multiverse action-adventure, complete with martial arts combat. Yet, in one of the verses, Evelyn and Deidre sport fingers that look like hot dogs and bond as Evelyn tries to convince her that she is loved.

The daughter of famous Hollywood actors Janet Leigh and Tony Curtis, Curtis has jokingly called herself "nepo baby" but is known in Hollywood for her lack of pretension.

Some of her most famous films are the original "Halloween" in 1978 and its seven sequels, "Trading Places," "A Fish Called Wanda," "True Lies" and "Freaky Friday."

(Reporting by Mary Milliken; Editing by Jonathan Oatis)